PERMANENT MAGNET MACHINE

专利内容由知识产权出版社提供专利名称：PERMANENT MAGNET MACHINE发明人：HORST, Gary, E.,HARTSFIELD, Richard, E.,Jr.,CARRIER, Mark, E.,CRAPO, Alan, D.申请号：EP03770267.7申请日：20030827公开号：EP1540794A2公开日：20050615摘要：A machine includes a rotor defining at least two adjacent magnet retentionslots and a plurality of interior permanent magnets. The rotor's radial thickness above amagnet retention slot transitions from a first thickness to a bridge region having a lesser,second thickness. The transition occurs within a defined angular expanse. Lowpermeability areas are positioned below the bridge region between the magnets. Thereare no direct linear paths between the ends of the magnets and no direct linear pathsthat extend radially from the outer rotor portion to the interior of the rotor, betweenthe magnets, that do not pass through a low permeability area. A machine includes astator defining stator poles, a rotor with interior permanent magnets. In oneembodiment, at least two impedance reduction slits are positioned radially outward ofthe magnets, and at least a portion of each slit is within a defined region.申请人：EMERSON ELECTRIC CO.地址：8000 W. Florissant Avenue St. LouisMissouri 63136 US国籍：US代理机构：Hale, Peter